中南大学学报（自然科学版）2026，Vol.57Issue(2)：718-731,14.DOI:10.11817/j.issn.1672-7207.2026.02.019
煤铝协调开采采场应力叠加与覆岩运移破断规律
Laws of stope stress superposition and overburden migration and fracture in coordinated mining of coal and bauxite
摘要
Abstract
To achieve coordinated,safe,and efficient mining of coal and coal-associated bauxite,firstly,a large-scale 3D numerical model was constructed based on the engineering geological conditions of Shanxi Chejiazhuang Coal Mine.This model was used to investigate the spatiotemporal evolution laws of stope stress and displacement in different coordinated mining modes of coal and bauxite.Secondly,a similar material model test for coordinated mining of coal and bauxite was conducted.This test was to reveal the laws of stress transmission superposition in the stope and overburden migration and fracture during coordinated mining.Finally,based on the concept of coordinated mining,reasonable offset distances for retreating coal and bauxite working faces under coordinated mining conditions were determined.The results show that in the initial stage of coordinated mining,the stope rock mass is only affected by the mining disturbance from a single ore body.The stress field and displacement field exhibit obvious superposition phenomena as the offset distance of retreating coal and bauxite working faces increases.Among them,the superposition effects on stress and displacement are minimal in opposite-direction mining of coal and bauxite.During the coordinated mining process,the overburden in the bauxite stope remains stable without phenomena such as fracture or collapse.Under different coordinated mining of opposite-direction coordinated mining,coal-first-then-bauxite coordinated mining,and bauxite-first-then-coal coordinated mining,the reasonable offset distances for retreating coal and bauxite working faces are 247.0,122.5,and 222.0 m,respectively.At these distances,the superposition disturbance effects on the overburden from coordinated mining are minimal.关键词
煤铝协调开采/应力叠加扰动/覆岩运移破断/工作面回采错距Key words
coal-bauxite coordinated mining/stress superposition effect/overburden rock movement-fracture/mining staggered distance of working face分类
矿业与冶金引用本文复制引用
孟庆彬,韩绪,黄炳香,浦海,王锐,安刚健..煤铝协调开采采场应力叠加与覆岩运移破断规律[J].中南大学学报（自然科学版）,2026,57(2):718-731,14.基金项目
国家重点研发计划资助项目(2021YFC2902103) （2021YFC2902103）
国家自然科学基金资助项目(52074268,51704280),中央高校基本科研业务费专项资金资助项目(2025ZDPY03)(Project(2021YFC2902103)supported by the National Key Research and Development Program of China （52074268,51704280）
Projects(52074268,51704280)supported by the National Natural Science Foundation of China （52074268,51704280）
Project(2025ZDPY03)supported by the Fundamental Research Funds for the Central Universities) （2025ZDPY03）
